Mailinglist Archive: opensuse-factory (1578 mails)

[Bruce Ferrell <bferrell@xxxxxxxxxxxx>]

On 11/24/2011 12:31 PM, Takashi Iwai wrote:
> At Thu, 24 Nov 2011 12:05:31 -0800,
> Greg KH wrote:
> > On Thu, Nov 24, 2011 at 10:32:08AM +0100, Takashi Iwai wrote:
> > > At Thu, 24 Nov 2011 09:48:50 +0100,
> > > Ludwig Nussel wrote:
> > > > Greg KH wrote:
> > > > > As a proposal for 12.2, I would like to implement the move of all
> > > > > binaries to /usr/ like is being done at the moment in Fedora.
> > > > > [...]
> > > > > If there are no major objections, I'll start working on Base:system in
> > > > > December.
> > > > This would be really massive and invasive change. Could you try this out
> > > > in a branch first before bothering packagers, please?
> > > > The modifications needed are most likely not just simple spec file
> > > > changes even if it may seem so in the first place. Esp the update case
> > > > seems underestimated to me. Also keep in mind that Factory must still be 
> > > > able
> > > > to bootstrap itself during the transition.
> > > > Has anyone considered modifying rpm to transparently take care of the
> > > > relocation?
> > > It's my concern when I read the post, too.  The idea itself sounds
> > > nice, but I foresee many problems with this action.
> > >
> > > Actually two things I thought of immediately:
> > >
> > > - Updates
> > >   Can rpm replace a directory into a symlink when the directory isn't
> > >   empty?  That is, when something is left in /lib/* (a left-over of
> > >   temporary file or some wild non-distro packages), /lib can't be
> > >   linked to /usr/lib yet.  So, it'll be a mixed state without /usr/lib
> > >   symlink fallback.
> > The filesystem package will handle this, I'm working with the Red Hat
> > people as they just solved this very problem, so yes, this will be taken
> > care of.
> So, filesystem package will do it by some post script or such?
> I can imagine that it contains /lib, /bin, etc as %ghost, and copy
> all existing ones (cleverly with taking hard-links into accounts)
> to /usr/ in %post.  Any other methods may break something, I guess.
>
> > >   Maybe more problem would be /bin -> /usr/bin, because the path might
> > >   be set in shebang.  When you update bash, it's placed to /usr/bin,
> > >   but /bin -> /usr/bin symlink still doesn't exist.  What happens if
> > >   you run a shell script of the old (still not updated) package?
> > I think the symlink pointing from /bin to /usr/bin should handle this,
> > why would the link not be there anymore?
> One problem is that this filesystem.rpm update becomes to a high
> dependency.  When bash.rpm is updated with the new location, and if
> user updates bash.rpm before filesystem.rpm, this will break badly.
>
> > >   And, can Tumbleweed handle this mess smoothly?
> > It better, I'll be testing to ensure this works properly :)
> >
> > > - The spec file rewrites
> > >   Many spec files contain the hard-coded /lib, /bin or /sbin.  
> > >   Can we use this as is?  Or if the change is needed, can we provide a
> > >   macro for sharing the spec for different versions?
> > The spec files look like they need to be rewritten.  First glance, it
> > "only" looks to be about 250 or so, again, most of this work is already
> > done for us in the link I posted.
> Rewriting the spec files would be more or less systematically.
> It'd be still helpful if we have some macros, though.
>
>
> thanks,
>
> Takashi
Just out of curiosity, if /usr goes away, what happens to /usr/local... And my 
favorite, /usr/local/src

Just askin'

Bruce
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